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operation=['addition','subtraction','multiplication','division']
I want to publish each element in the array from one node and subscribe those elements by other node. What should be the proper python syntax for publishing and subscribing ?
Read The Friendly Manual: Publishers and Subscribers
" ros was giving some error. " It would be easier if you'd tell exactly(!) which error is returned. And do you want to publish an array or "each element in the array"?
to publish an array of string, namely string_list, i do that:
std::vector<std::string> string_list
Since is not possible (someone correct me if i am wrong) to publish it like it is, create a custom message, creating a .msg file into then msg directory of your package, like:
std::vector<std::string> strings
and do everything needed for compiling it and generate the headers (have a look to wiki.ros). then, include the header in your .cpp file and create the publisher
ros::Publisher string_list_pub = n.advertise<my_pkg::cst_msg>("/string_list",1)
To access the string values, if a my_pkg::cst_msg msg has been defined, do it as msg.strings[i]
Ciao
Asked: 2016-12-04 00:40:03 -0500
Seen: 4,304 times
Last updated: Feb 27 '18
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